Home / 15,651.86-21,600.09-8,578.28

Finding the Fourth Proportional to 15,651.86, 21,600.09 and 8,578.28

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Solution

The fourth proportional to 15,651.86, 21,600.09 and 8,578.28 is: 11,838.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,651.86 : 21,600.09 = 8,578.28 : x
  2. Step 2: Convert to fraction form
    15,651.86/21,600.09 = 8,578.28/x
  3. Step 3: Cross multiply
    15,651.86x = 21,600.09 × 8,578.28
  4. Step 4: Simplify right side
    15,651.86x = 185,291,512.04
  5. Step 5: Solve for x
    x = 185,291,512.04/15,651.86
  6. Step 6: Final answer
    x = 11,838.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.